Fourth, the relevant parameters and calculation methods 1. Production technical indicators. (1) Based on the actual cumulative feeding days of sows in the whole year, the average daily sows have more than 2 litters per day. (2) More than 18 commercial pigs per sow. (3) The market weight of 90 kg will take less than 25 weeks. (4) The ratio of material to meat in the whole group does not exceed 4:1. (5) Carcass lean meat rate is above 55%. 2. The calculation method of the production index. (1) The average annual number of sows reared (M): (commercial pigs include marketed pigs, selling pigs, self-breeding pigs, self-breeding sows) 3. Feeding standards. Stage Stage Deadline Seasonal Protein (%) Daily Feeding (kg/day) 1. Boars over 5 months of age 12-16 in summer 1.4-2.3 in winter 12-16 1.2-3.2 12-16 months in summer at 5 months 1.8-2.7 Winter 12-16 2.3-3.2 2. Summer of fall-back gestation period 12-14 1.8-2.3 Sow winter 11-14 2.3-2.7 Period of lactation 1 13-16 4.5-6.4 3. Summer of pregnancy 12-14 in summer 2.3-2.7 Pig winter 11-14 1.8-2.7 Lactation period 1 13-16 5-6.8 4. Suckling pig 0-5 weeks old 1 20-24 Free feeding 5. Piglets 5-10 weeks old 1 18-20 Eating freely 6. Medium-sized pigs 11 weeks old - slaughter 1 13-17 free intake 7. Remarks: Metabolisable energy more than 3200
Ultrasonic Washer,Ultrasonic Cleaner,Ultrasonic Cleaning
Medsinglong Medical Equipment Co., Ltd. , http://www.gzultrasound.com